U.S. officials Thursday denounced what one called a "grotesque" leaflet ordering Jews in one eastern Ukrainian city to register with a government office, but the Jewish community there dismissed it as a "provocation."

The fliers were handed out by masked men in front the main synagogue in Donetsk, where pro-Russian protesters have declared a "People's Republic," Jewish leaders there said. The document warned the city's Jews to register and document their property or face deportation, according to a CNN translation of one of the leaflets.

Geoffrey Pyatt, the U.S. ambassador to Ukraine, told CNN's "The Lead with Jake Tapper" that a respected Jewish leader in Ukraine showed him a photograph of one of the leaflets. He called the document "chilling."

And in Geneva, where diplomats held emergency talks on the Ukrainian crisis, U.S. Secretary of State John Kerry called the leaflets "grotesque" and "beyond unacceptable."

But the Jewish community statement said relations between the Jews of Donetsk and their neighbors were amicable, and the self-proclaimed head of the "People's Republic," Denis Pushilin, denied any connection to the fliers.

Pushilin told CNN the handwriting on the flier wasn't his, and the title attached to his name was not one he uses. It wasn't clear who had distributed the leaflets, but the chief rabbi of nearby Dnipropetrovsk said, "Everything must be done to catch them."

"It's important for everyone to know it's not true," said the rabbi, Shmuel Kaminezki. "The Jews of Donetsk will not do what the letter says."

Malaysian Remote Sensing Agency (MRSA) received new satellite images from France that were taken on March 23.

The images showed 122 potential objects in one area of the ocean. Some of the objects were as much as 23 meters in length.

Some appeared bright, possibly indicating solid material. They were located about 2,500 kilometers from Perth.

"This is another new lead that will help direct the search operation," said Acting Minister of Transportation Hishammuddin Bin Hussein on Wednesday.

Officials say they can tell you how Flight 370 ended. It crashed into the Indian Ocean, they'll say, citing complicated math as proof.

They can tell you when it probably happened - on March 8, sometime between 8:11 and 9:15 a.m. (7:11 to 8:15 p.m. ET March 7), handing you a sheet with extraordinarily technical details about satellite communications technology.

What they still can't tell you is why, or precisely where, or show you a piece of the wreckage.

Mohamad Chatah, a former Lebanese minister of finance and ambassador to the United States, was killed Friday when a car bomb struck his convoy in downtown Beirut, Lebanon's National News Agency reported.

Four others were killed and 71 were wounded, Lebanon's health ministry said. Cars were burned beyond recognition as a wall of flames and thick black smoke shot up from the blast site.

No one has claimed responsibility for the attack.

Chatah's last tweet, posted about an hour before his death, talked about Hezbollah - the Lebanese-based Shiite militant group that Chatah was at odds with.

"#Hezbollah is pressing hard to be granted similar powers in security & foreign policy matters that Syria exercised in Lebanon for 15 yrs," Chatah tweeted.

Chatah was known as a staunch critic of Syrian President Bashar al-Assad, whom he accused of meddling in Lebanon's internal affairs. Chatah also opposed Hezbollah, which has sent fighters to help al-Assad's forces in the Syrian civil war.

"A united and peaceful Syria ruled by Assad is simply not possible anymore. It has been like that for some time," Chatah wrote in his last blog post. "The status quo ante cannot be restored. Iran and Hezbollah realize this more than anyone else."

Chatah graduated from American University in Beirut and served as Lebanon's ambassador to the United States from 1997 to 1999, according to his blog.

He also served as a senior adviser for former Prime Minister Saad Hariri.

Current Prime Minister Najib Mikati posted a tweet saying he is calling off his vacation and heading back to Lebanon.

"I condemn this assassination, which targeted a political, an academic, a moderate and an upscale figure who always believed in dialogue and the language of reason, logic and the right to have a different opinion" Mikati said.